github - ghsa-v8mw-xqhr-2vqp

ghsa-v8mw-xqhr-2vqp

Vulnerability from github

Published

2022-05-24 17:28

Modified

2022-05-24 17:28

Details

A vulnerability was found in upstream release cryptsetup-2.2.0 where, there's a bug in LUKS2 format validation code, that is effectively invoked on every device/image presenting itself as LUKS2 container. The bug is in segments validation code in file 'lib/luks2/luks2_json_metadata.c' in function hdr_validate_segments(struct crypt_device cd, json_object hdr_jobj) where the code does not check for possible overflow on memory allocation used for intervals array (see statement "intervals = malloc(first_backup * sizeof(intervals));"). Due to the bug, library can be tricked* to expect such allocation was successful but for far less memory then originally expected. Later it may read data FROM image crafted by an attacker and actually write such data BEYOND allocated memory.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-14382"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-09-16T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability was found in upstream release cryptsetup-2.2.0 where, there\u0027s a bug in LUKS2 format validation code, that is effectively invoked on every device/image presenting itself as LUKS2 container. The bug is in segments validation code in file \u0027lib/luks2/luks2_json_metadata.c\u0027 in function hdr_validate_segments(struct crypt_device *cd, json_object *hdr_jobj) where the code does not check for possible overflow on memory allocation used for intervals array (see statement \"intervals = malloc(first_backup * sizeof(*intervals));\"). Due to the bug, library can be *tricked* to expect such allocation was successful but for far less memory then originally expected. Later it may read data FROM image crafted by an attacker and actually write such data BEYOND allocated memory.",
  "id": "GHSA-v8mw-xqhr-2vqp",
  "modified": "2022-05-24T17:28:23Z",
  "published": "2022-05-24T17:28:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14382"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1874712"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OJTQ4KSVCW2NMSU5WFVPOHY46WMNF4OB"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TD6YSD63LLRRC4WQ7DJLSXWNUCY6FWBM"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4493-1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2020-14382

Vulnerability from cvelistv5

Published

2020-09-16 14:37

Modified

2024-08-04 12:46

Severity ?

Summary

A vulnerability was found in upstream release cryptsetup-2.2.0 where, there's a bug in LUKS2 format validation code, that is effectively invoked on every device/image presenting itself as LUKS2 container. The bug is in segments validation code in file 'lib/luks2/luks2_json_metadata.c' in function hdr_validate_segments(struct crypt_device *cd, json_object *hdr_jobj) where the code does not check for possible overflow on memory allocation used for intervals array (see statement "intervals = malloc(first_backup * sizeof(*intervals));"). Due to the bug, library can be *tricked* to expect such allocation was successful but for far less memory then originally expected. Later it may read data FROM image crafted by an attacker and actually write such data BEYOND allocated memory.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1874712	x_refsource_MISC
	https://usn.ubuntu.com/4493-1/	vendor-advisory, x_refsource_UBUNTU
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OJTQ4KSVCW2NMSU5WFVPOHY46WMNF4OB/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TD6YSD63LLRRC4WQ7DJLSXWNUCY6FWBM/	vendor-advisory, x_refsource_FEDORA

Impacted products

▼	Vendor	Product
	n/a	cryptsetup

Show details on NVD website

JSON

To clipboard

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    ],
    "cna": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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